A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Fully-weathered sandstone high slope excavation construction method
The invention discloses a fully-weathered sandstone high slope excavation construction method. The fully-weathered sandstone high slope excavation construction method comprises the following steps ofstep I, excavating a french drain and a water collecting well, arranging hollow anchor pipes, and pumping water by adopting a water pump until the horizontal line of underground water reaches a presetconstruction elevation; step II, performing segmented construction in the longitudinal direction, arranging two groups of high-pressure jet grouting piles, namely a group of inner high-pressure jet grouting piles and a group of outer high-pressure jet grouting piles, arranging concrete top beams at the tops of the high-pressure jet grouting piles, and enabling one high-pressure jet grouting pilein the inner row to be in reinforced connection with the two adjacent high-pressure jet grouting piles in the outer row through a plurality of steel bars; step III, digging out earth till the construction depth of the foundation pit is reached; step IV, arranging a first steel-concrete layer, a waterproof agent layer and a rubber layer along the side wall of the foundation pit; step V, arranging arubber asphalt layer and a second steel-concrete layer according to the preset slope inclination angle, and pre-burying a plurality of hollow anchor pipes; and step VI, repeating step I to step V until the depth of the foundation pit reaches the preset elevation. The method has the beneficial effects that the water stopping effect in the foundation pit excavation process of a whole sandstone layer is outstanding, and supporting is safe and reliable.
本发明公开了一种全风化砂岩高边坡开挖施工方法，包括：步骤一、挖设盲沟、集水井，设置中空锚管，采用水泵抽水直至地下水水平线达到预设施工标高；步骤二、沿纵向分段施工，每段基坑设置内外两组高压旋喷桩，高压旋喷桩顶部设置砼冠梁，内排的一个高压旋喷桩通过多根钢筋分别与外排的相邻的两个高压旋喷桩加固连接；步骤三、挖出土方直至该段基坑的施工深度；步骤四、沿基坑侧壁设置第一钢混层、防水剂层、橡胶层；步骤五、根据预设边坡倾斜角度，设置橡胶沥青层和第二钢混层；并预埋多个中空锚管；步骤六、重复步骤一至步骤五，直至基坑深度达到预设标高。本发明具有使整个砂岩层的基坑开挖过程中止水效果突出，支护安全可靠的有益效果。
Fully-weathered sandstone high slope excavation construction method
The invention discloses a fully-weathered sandstone high slope excavation construction method. The fully-weathered sandstone high slope excavation construction method comprises the following steps ofstep I, excavating a french drain and a water collecting well, arranging hollow anchor pipes, and pumping water by adopting a water pump until the horizontal line of underground water reaches a presetconstruction elevation; step II, performing segmented construction in the longitudinal direction, arranging two groups of high-pressure jet grouting piles, namely a group of inner high-pressure jet grouting piles and a group of outer high-pressure jet grouting piles, arranging concrete top beams at the tops of the high-pressure jet grouting piles, and enabling one high-pressure jet grouting pilein the inner row to be in reinforced connection with the two adjacent high-pressure jet grouting piles in the outer row through a plurality of steel bars; step III, digging out earth till the construction depth of the foundation pit is reached; step IV, arranging a first steel-concrete layer, a waterproof agent layer and a rubber layer along the side wall of the foundation pit; step V, arranging arubber asphalt layer and a second steel-concrete layer according to the preset slope inclination angle, and pre-burying a plurality of hollow anchor pipes; and step VI, repeating step I to step V until the depth of the foundation pit reaches the preset elevation. The method has the beneficial effects that the water stopping effect in the foundation pit excavation process of a whole sandstone layer is outstanding, and supporting is safe and reliable.
本发明公开了一种全风化砂岩高边坡开挖施工方法，包括：步骤一、挖设盲沟、集水井，设置中空锚管，采用水泵抽水直至地下水水平线达到预设施工标高；步骤二、沿纵向分段施工，每段基坑设置内外两组高压旋喷桩，高压旋喷桩顶部设置砼冠梁，内排的一个高压旋喷桩通过多根钢筋分别与外排的相邻的两个高压旋喷桩加固连接；步骤三、挖出土方直至该段基坑的施工深度；步骤四、沿基坑侧壁设置第一钢混层、防水剂层、橡胶层；步骤五、根据预设边坡倾斜角度，设置橡胶沥青层和第二钢混层；并预埋多个中空锚管；步骤六、重复步骤一至步骤五，直至基坑深度达到预设标高。本发明具有使整个砂岩层的基坑开挖过程中止水效果突出，支护安全可靠的有益效果。
Fully-weathered sandstone high slope excavation construction method
全风化砂岩高边坡开挖施工方法
WANG JUE (author) / HUANG XIANFENG (author) / LIU HUAJIANG (author) / ZHU XIULING (author) / DING JIE (author)
2020-11-03
Patent
Electronic Resource
Chinese
Weathered sandstone-containing subway station foundation pit excavation device and excavation method
| European Patent Office | 2024
Weathered sandstone-containing subway station foundation pit excavation equipment selection method
| European Patent Office | 2021
Red sandstone fully-weathered substance-based high-compactness filler and preparation method thereof
| European Patent Office | 2022
Strong weathered rock high slope protection construction structure
| European Patent Office | 2024
Weathered rock excavation construction process in inland river harbor basin
| European Patent Office | 2021